5 Famous Optical Illusions Finally Explained

5 Famous Optical Illusions Finally Explained

Optical illusions are a perfect example of how your brain and your eyes can deceive you. They can reveal how your brain works. It may sound surprising, but not all people perceive illusions in the same way. Some fail to see the effect of particular illusions altogether. It all depends on how your brain processes information.

The Spinning Dancer Illusion 1:44
Hermann Grid Illusion and Scintillating Grid Illusion 3:32
Ebbinghaus Illusion 5:54
Delboeuf Illusion 6:55
The Sydney Opera House Illusion 7:57

The Spinning Dancer is a kinetic, bistable optical illusion resembling a pirouetting female dancer. Some observers initially see the figure as spinning clockwise and some anticlockwise. Additionally, some may see the figure suddenly spin in the opposite direction. The illusion derives from an inherent ambiguity from the lack of visual cues for depth. There are other optical illusions that originate from the same or similar kind of visual ambiguity, such as the Necker cube: By Nobuyuki Kayahara – Procreo Flash Design Laboratory, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, https://commons.wikimedia.org/wiki/File:Spinning_Dancer.gif#/media/File:Spinning_Dancer.gif

Music by Epidemic Sound https://www.epidemicsound.com/

– Some people see this lady turning clockwise while others are 100% sure she’s spinning counterclockwise. What’s more, there are individuals who can make her change direction!
– The white dots situated at the intersections of the grid shift their color from white to gray and back. When you concentrate on a particular dot, you see that it’s white. But as soon as your attention wanders, the dot turns gray.
– To everyone who looks at the image, the orange circle on the right appears to be larger. But this is only an illusion! It’s based on our perception of relative size. The smaller gray circles around the orange circle on the right make it look larger than the one on the left, which is surrounded by bigger gray circles.
– Now have a look at these 2 black circles placed in 2 black rings. Which of these circles seems larger to you? Most people will answer that the one on the left, surrounded by a smaller ring, looks bigger. In fact, these circles are exactly the same size.
– If you visit Sydney, Australia, and happen to stay in a hotel overlooking the famous Sydney Opera House, you may witness an optical illusion named after this astounding building: the Sydney Opera House Illusion.

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Just a figment of your imagination.